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Variable Flow Pipework Systems - CIBSE Knowledge Series: KS7 by Butcher, Ken; Carwardine, Helen; Parsloe, C is a nonfiction available to read on EtoBox.

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<p>This publication explains how to design re-circulating heating or cooling water systems incorporating variable speed pumps. Correctly designed, these systems have the potential to deliver worthwhile energy savings over the lifetime of a building.Most constant speed pumps operate with fixed flow rate and energy consumption for their entire lifetime. When zones are satisfied, 3- or 4-port valves divert heating or cooling water away from terminal units through bypasses. Overall flow through the pump remains roughly constant. In systems where pump speed is allowed to vary, the flow rate constantly changes in response to demand. When zones are satisfied, 2-port controlvalves close enabling the pump to reduce speed and save energy.Since the mid-1990s variable speed pump drives have become a viable alternative to constant speed drives. However, there has been much debate regarding how to maximise their energy-saving potential. There are many ways to make a system work with variable speed pumps. However, if not designed correctly, the energy savings achieved may be small relative to the increased cost of the system.In order to be worthwhile, the design must: — achieve a significant redu

Who reads Variable Flow Pipework Systems - CIBSE Knowledge Series: KS7?

Author

Butcher, Ken; Carwardine, Helen; Parsloe, C

Publisher

Chartered Institution of Building Services Engineers (CIBSE)

Published

2006

Language

EN

ISBN

9781628709711

Category

nonfiction

Subjects

Engineering, Stem